Engine



March 5, 1929. w. E. ZUCCARELLO ET AL 1,704,236

ENGINE Original Filed Oct. 13. 1926 2 Sheets$heet 7 V WEZuccwreZ Z0 INVENTOR WIYNESS: ATTORNEY March 5, 1929. w. E. ZUCCARELLO ET AL ENGINE Original Filed Oct. 13, 19%

2 Sheets-Sheet 2 Liar-v WETZu cc QJ'eZZo J C-Johnsoro \NVENTOR ATTORNEY Patented Mar. 5, 1929.

UNITED STATES;

1 ,104,236 PATENT OFFICE.

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Enema Application flied was 13, 192's, Serial 1T0. 141,374. Renewed ma 18. 19212 teeth of the rotors and delivered to an explosion chamber where the gases are exploded, with means for causing the products of combustion to act on the teeth of some of the rotors to rotate the rotors as the gasespass to GXllilllSL' I Another object of the invention is to provide means whereby some of the gases which are carried around by some of the rotors are returned to a point where they will be caused to enter the explosion chamber by the other rotors.

This invention also consists in certain" other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing our invention in detail, ref erence will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side view of the improved engine.

Figure 2 is a view showing the cover removed and parts in section.

Figure 3 is a section on line 33 of Figure 2;

Figure 4 isa fragmentary sectional view showing the ported member between ,the

chambers of the casing.

In these views, 1' indicates a casing which is provided with a cover 2 and V which is formed with four circular chambers 5,'each chamber having a. narrow central part and an enlarged outer part. The central part of each chamber is slightly enlarged to form an oil case 6. The casing is also formed with a water jacket or space 7 for cooling the walls of the chambers. 'A shaft 8 passes through the center of each chamber and is suitably j ournaled in projections forming art of the casing. 'A rotor 9 is placed in eac chamber and is connected with the shaft which passes through the chamber.

Each rotor is made in the shape of a cog wheel and thechambers communicate with each other so that each lower rotor will mesh with the other lower rotor and with one of the upper rotors, these upper rotors meshing with each other and the said upper rotors if necessary.

A horizontall arran ed outlet port 12 is arranged at eac endo? the casingadjacent the bottom thereof and these ports communicate with the lower parts of the two chambers for the large rotors. Adjacent each outlet port, a portion 13 0f the wall of each large chamber extends upwardly to make a gas-tight joint with the teeth of the large rotor, these parts 13 being arranged directly in front of the exhaust ports, the rotors rotating in the direction of the arrows 14. The explosion chamber 15 is formed at the lower portions of the chambers for thelarge rotors where the chambers communicate with each other, the chamber 15 extending to the walls 13 of the rotor chambers. A spark plug 16 is placed in the chamber 15 to initially ignite the explosive mixture entering the chamber. After this initial ignition, the

burning gases in the said chamber will ignite g the fresh gases entering the same.

An inlet port 17 is arranged at each side terminal of the member 10 and these,

ports are connected to the manifold 18 which is connected with the carburetor 19. Thus an explosive mixture will be drawn through each port 17 by the suction created by the .rotor will enter the assage 20 in the member 10, the forked ower end of the said assage delivering this gas into the spaces tween the teeth of the large rotors so that this gas will also be carried to the explosion chamber 15. Any gas which does not enter the passage 20 but is carried to the top part of the space formed at the junction of the two upper chambers will be carried by a piple 21 back to the manifold 18 so that it wi again enter the suction spaces of the chamber. The exploded gases will act on the teeth at thelower portions of the large rotors so asto cause the said rotors to rotate and then the gases will pass through the exhaust ports 12. Any gases that are carried up by the rotors will pass through the exhaust 'ports 22' formed in the upper portions of the walls of the chambers/for the large rotors and will pass into the ex-' haust pipes 23.

From the foregoing, it will be seen that we have provided a simple form of rotary motor, the cog-like rotors of. which'act to draw in the explosive mixture and compress the same and carry it to an explosion chamber where the gases are exploded and then the products of combustion, acting on the teeth of some of the large rotors, will rotate'the same andpermit'theproducts of combustion to pass, to exhaust. Thus portions of the combustible mixture which are compressed by the small rotors will be delivered to the large rotors, where they will be compressed again and then delivered to the explosion chamber.

Suitable packing/means are placed whereever necessary and the shafts are provided with anti-friction bearings,.as shown at 23,

and the power can be taken off of one of.

the shafts of the large rotors.

It will be noticed from the dotted lineson the edges of the toothed portions of the in the combination and arrangement of the several parts, provided that such changes fall within the. scope of the appended claim. 7

What we claim is 1- Aninternal combustion engine of the class described comprising a casing having a plurality of circular chambers therein which are in communication with each other, a

"cog-like rotor in each chamber, said chamhers and rotors being arranged in upper and lower pairs, the rotors of each pair meshing with each other and with one of the other pair, inlet means arranged at the point where the teeth of each rotor of one pair leaves the teeth of each rotor of the op osite pair, an explosion chamber formed ad acent the" point where the teeth of one rotor of one pair leaves the teeth of the other rotor of said pair, exhaust means. separated from the outer ends of the said explosion chamber by an inwardly extending part of the walls of the chambers of the last mentioned or lower pair of rotors and means for causing the gases compressed by the upper pair of rotors to be returned to a point where they will be compressed and carried to the explosion chamber by the lower pair of rotors.

In testimony whereof we aflix our signatures.

wILLiAM E. ZUCGARELLO JESSE o, JOHNSON. 

